Condensed Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Net cash paid for capitalized interest	$ 47,000	$ 37,000
Alabama Power [Member]
Net cash paid for capitalized interest	8,000	6,000
Georgia Power [Member]
Net cash paid for capitalized interest	8,000	6,000
Gulf Power [Member]
Net cash paid for capitalized interest	2,271	1,408
Mississippi Power [Member]
Interest paid	37,436	37,036
Net cash paid for capitalized interest	29,087	23,613
Southern Power [Member]
Net cash paid for capitalized interest	$ (113)	$ 0